Electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and 2,5-diformylfuran

Patent metadata

Field	Value
Publication number	US-10655233-B2
Application number	US-201715421750-A
Country	US
Kind code	B2
Filing date	Feb 1, 2017
Priority date	Jan 8, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

Electrochemical and photoelectrochemical cells for the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran are provided. Also provided are methods of using the cells to carry out the electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran.

First claim

What is claimed is:

1. A photoelectrochemical cell comprising:
an anode in a single phase anode electrolyte solution comprising 5-hydroxymethylfurfural; and
a cathode in a cathode electrolyte solution;
wherein at least one of the anode and the cathode is a photoelectrode comprising a semiconductor.

2. The cell of claim 1 , wherein the anode is a photoelectrode comprising a semiconductor.

3. The cell of claim 1 , further comprising a TEMPO mediator immobilized on the anode or dissolved in the single-phase anode electrolyte solution.

4. The cell of claim 3 , wherein the TEMPO mediator is immobilized on the anode.

5. The cell of claim 1 , wherein the single-phase anode electrolyte solution is an aqueous electrolyte solution having a pH of less than 12.

6. The cell of claim 5 , wherein the anode does not comprise platinum, palladium, or gold.

7. The cell of claim 1 , wherein the single-phase anode electrolyte solution is an aqueous electrolyte solution having a pH of no greater than 10.

8. The photoelectrochemical cell of claim 1 , wherein the anode is a photoanode comprising n-type BiVO 4 .

9. A photoelectrochemical cell comprising:
a photoanode comprising n-type BiVO 4 in an anode electrolyte solution comprising 5-hydroxymethylfurfural; and
a cathode in a cathode electrolyte solution.

10. An electrochemical cell comprising:
an anode in a single-phase anode electrolyte solution comprising 5-hydroxymethylfurfural;
a TEMPO mediator immobilized on the anode or dissolved in the single-phase anode electrolyte solution; and
a cathode in a cathode electrolyte solution, wherein the cathode is in electrical communication with the anode.

11. The electrochemical cell of claim 10 , wherein the single-phase anode electrolyte solution is an aqueous electrolyte solution having a pH of less than 12.

12. The electrochemical cell of claim 10 , wherein the anode does not comprise platinum, palladium, or gold.

13. The electrochemical cell of claim 10 , wherein the single-phase anode electrolyte solution does not serve as an oxygen donor.

14. The electrochemical cell of claim 10 , wherein the TEMPO mediator is immobilized on the anode.

Assignees

• Wisconsin Alumni Res Found

Inventors

• Choi Kyoung-Shin
• Cha Hyun Gil

Classifications

• H01G9/2027

  comprising an oxide semiconductor electrode · CPC title

• C25B9/00

  Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features · CPC title

• H01G9/2004

  characterised by the electrolyte, e.g. comprising an organic electrolyte · CPC title

• C25B11/12

  Chemistry & Metallurgy · mapped topic

• C25B9/06

  Chemistry & Metallurgy · mapped topic